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<h3 id="MORX-18">MORX-18: Contextual Glyph Substitution</h3>

<div class="desc">
  The <a href="../fonts/TestMORXEighteen.ttf">font</a> for this test case has
  an <a href="https://developer.apple.com/fonts/TrueType-Reference-Manual/RM06/Chap6morx.html"
  >AAT Extended Glyph Metamorphosis Table</a>
  with a single <em>Contextual Glyph Substitution Subtable</em>.
  Its finite-state machine
  contains a single state with the following transitions:
</div>

<ul class="desc">
  <li>For glyph <em>B</em>, the transition carries the <em>SetMark</em> flag.</li>

  <li>For glyph <em>D</em>, the transition sets <em>MarkIndex</em> to 0,
  and <em>CurrentIndex</em> to 1.</li>
</ul>

<div class="desc">
  The glyph substitution table has two entries. Index 0 replaces
  letters <em>A</em> to <em>E</em> by circled black-on-white forms;
  index 1 replaces <em>A</em> to <em>E</em> by circled white-on-black
  forms.
</div>

<div class="desc">
  If your rendering system correctly implements <em>Apple Advanced
  Typography,</em> the renderings should look as expected.
</div>

<table>
  <tr>
    <th>Expected</th>
    <td class="expected" ft:id="MORX-18/1" ft:render="ABCDE"
        ft:font="TestMORXEighteen.ttf"><svg version="1.1" viewBox="0 -200 3791 1200"><symbol id="MORX-18/1.A" overflow="visible"><path d="M459,221 L176,221 L91,0 L0,0 L279,717 L360,717 L638,0 L545,0 Z M352,517 Q345,537 335,568 Q325,599 318,624 Q303,564 287,517 L206,301 L432,301 Z" /></symbol><symbol id="MORX-18/1.B.alt" overflow="visible"><path d="M500,769 Q612,769 706,713 Q801,658 856,563 Q912,469 912,357 Q912,245 856,150 Q801,56 706,0 Q612,-55 500,-55 Q388,-55 293,0 Q199,56 143,150 Q88,245 88,357 Q88,469 143,563 Q199,658 293,713 Q388,769 500,769 Z M500,1 Q597,1 678,49 Q760,97 808,178 Q856,260 856,357 Q856,454 808,535 Q760,617 678,665 Q597,713 500,713 Q403,713 321,665 Q240,617 192,535 Q144,454 144,357 Q144,260 192,178 Q240,97 321,49 Q403,1 500,1 Z M596,372 Q642,360 665,333 Q688,307 688,268 Q688,210 646,177 Q604,145 531,145 L371,145 L371,574 L503,574 Q590,574 632,549 Q675,524 675,466 Q675,393 596,372 Z M440,395 L513,395 Q564,395 584,410 Q604,426 604,460 Q604,492 580,506 Q557,521 505,521 L440,521 Z M521,198 Q617,198 617,273 Q617,343 517,343 L440,343 L440,198 Z" /></symbol><symbol id="MORX-18/1.C" overflow="visible"><path d="M392,645 Q277,645 211,568 Q145,491 145,357 Q145,221 207,145 Q270,69 391,69 Q468,69 562,97 L562,19 Q522,4 479,-3 Q436,-10 378,-10 Q217,-10 133,87 Q50,185 50,358 Q50,467 90,549 Q130,632 207,678 Q285,724 393,724 Q448,724 498,713 Q549,702 590,682 L554,606 Q468,645 392,645 Z" /></symbol><symbol id="MORX-18/1.D.alt1" overflow="visible"><path d="M500,-55 Q388,-55 293,0 Q199,56 143,150 Q88,245 88,357 Q88,469 143,563 Q199,658 293,713 Q388,769 500,769 Q612,769 706,713 Q801,658 856,563 Q912,469 912,357 Q912,245 856,150 Q801,56 706,0 Q612,-55 500,-55 Z M479,145 Q590,145 650,201 Q711,257 711,365 Q711,467 652,520 Q594,574 491,574 L350,574 L350,145 Z M419,521 L483,521 Q640,521 640,363 Q640,198 471,198 L419,198 Z" /></symbol><symbol id="MORX-18/1.E" overflow="visible"><path d="M97,0 L97,714 L496,714 L496,635 L187,635 L187,412 L478,412 L478,334 L187,334 L187,79 L496,79 L496,0 Z" /></symbol><use x="0" y="0" xlink:href="#MORX-18/1.A" /><use x="639" y="0" xlink:href="#MORX-18/1.B.alt" /><use x="1639" y="0" xlink:href="#MORX-18/1.C" /><use x="2235" y="0" xlink:href="#MORX-18/1.D.alt1" /><use x="3235" y="0" xlink:href="#MORX-18/1.E" /></svg></td>

    <td class="expected" ft:id="MORX-18/2" ft:render="ABBBDE"
        ft:font="TestMORXEighteen.ttf"><svg version="1.1" viewBox="0 -200 4447 1200"><symbol id="MORX-18/2.A" overflow="visible"><path d="M459,221 L176,221 L91,0 L0,0 L279,717 L360,717 L638,0 L545,0 Z M352,517 Q345,537 335,568 Q325,599 318,624 Q303,564 287,517 L206,301 L432,301 Z" /></symbol><symbol id="MORX-18/2.B" overflow="visible"><path d="M301,714 Q439,714 505,673 Q572,632 572,537 Q572,474 537,432 Q502,391 436,379 L436,374 Q596,347 596,203 Q596,106 530,53 Q464,0 348,0 L97,0 L97,714 Z M319,410 Q407,410 443,438 Q479,467 479,527 Q479,585 437,611 Q396,637 305,637 L187,637 L187,410 Z M187,76 L331,76 Q421,76 460,111 Q500,146 500,210 Q500,270 459,302 Q418,335 324,335 L187,335 Z" /></symbol><symbol id="MORX-18/2.B.alt" overflow="visible"><path d="M500,769 Q612,769 706,713 Q801,658 856,563 Q912,469 912,357 Q912,245 856,150 Q801,56 706,0 Q612,-55 500,-55 Q388,-55 293,0 Q199,56 143,150 Q88,245 88,357 Q88,469 143,563 Q199,658 293,713 Q388,769 500,769 Z M500,1 Q597,1 678,49 Q760,97 808,178 Q856,260 856,357 Q856,454 808,535 Q760,617 678,665 Q597,713 500,713 Q403,713 321,665 Q240,617 192,535 Q144,454 144,357 Q144,260 192,178 Q240,97 321,49 Q403,1 500,1 Z M596,372 Q642,360 665,333 Q688,307 688,268 Q688,210 646,177 Q604,145 531,145 L371,145 L371,574 L503,574 Q590,574 632,549 Q675,524 675,466 Q675,393 596,372 Z M440,395 L513,395 Q564,395 584,410 Q604,426 604,460 Q604,492 580,506 Q557,521 505,521 L440,521 Z M521,198 Q617,198 617,273 Q617,343 517,343 L440,343 L440,198 Z" /></symbol><symbol id="MORX-18/2.D.alt1" overflow="visible"><path d="M500,-55 Q388,-55 293,0 Q199,56 143,150 Q88,245 88,357 Q88,469 143,563 Q199,658 293,713 Q388,769 500,769 Q612,769 706,713 Q801,658 856,563 Q912,469 912,357 Q912,245 856,150 Q801,56 706,0 Q612,-55 500,-55 Z M479,145 Q590,145 650,201 Q711,257 711,365 Q711,467 652,520 Q594,574 491,574 L350,574 L350,145 Z M419,521 L483,521 Q640,521 640,363 Q640,198 471,198 L419,198 Z" /></symbol><symbol id="MORX-18/2.E" overflow="visible"><path d="M97,0 L97,714 L496,714 L496,635 L187,635 L187,412 L478,412 L478,334 L187,334 L187,79 L496,79 L496,0 Z" /></symbol><use x="0" y="0" xlink:href="#MORX-18/2.A" /><use x="639" y="0" xlink:href="#MORX-18/2.B" /><use x="1265" y="0" xlink:href="#MORX-18/2.B" /><use x="1891" y="0" xlink:href="#MORX-18/2.B.alt" /><use x="2891" y="0" xlink:href="#MORX-18/2.D.alt1" /><use x="3891" y="0" xlink:href="#MORX-18/2.E" /></svg></td>

    <td class="expected" ft:id="MORX-18/3" ft:render="ABDE"
        ft:font="TestMORXEighteen.ttf"><svg version="1.1" viewBox="0 -200 3195 1200"><symbol id="MORX-18/3.A" overflow="visible"><path d="M459,221 L176,221 L91,0 L0,0 L279,717 L360,717 L638,0 L545,0 Z M352,517 Q345,537 335,568 Q325,599 318,624 Q303,564 287,517 L206,301 L432,301 Z" /></symbol><symbol id="MORX-18/3.B.alt" overflow="visible"><path d="M500,769 Q612,769 706,713 Q801,658 856,563 Q912,469 912,357 Q912,245 856,150 Q801,56 706,0 Q612,-55 500,-55 Q388,-55 293,0 Q199,56 143,150 Q88,245 88,357 Q88,469 143,563 Q199,658 293,713 Q388,769 500,769 Z M500,1 Q597,1 678,49 Q760,97 808,178 Q856,260 856,357 Q856,454 808,535 Q760,617 678,665 Q597,713 500,713 Q403,713 321,665 Q240,617 192,535 Q144,454 144,357 Q144,260 192,178 Q240,97 321,49 Q403,1 500,1 Z M596,372 Q642,360 665,333 Q688,307 688,268 Q688,210 646,177 Q604,145 531,145 L371,145 L371,574 L503,574 Q590,574 632,549 Q675,524 675,466 Q675,393 596,372 Z M440,395 L513,395 Q564,395 584,410 Q604,426 604,460 Q604,492 580,506 Q557,521 505,521 L440,521 Z M521,198 Q617,198 617,273 Q617,343 517,343 L440,343 L440,198 Z" /></symbol><symbol id="MORX-18/3.D.alt1" overflow="visible"><path d="M500,-55 Q388,-55 293,0 Q199,56 143,150 Q88,245 88,357 Q88,469 143,563 Q199,658 293,713 Q388,769 500,769 Q612,769 706,713 Q801,658 856,563 Q912,469 912,357 Q912,245 856,150 Q801,56 706,0 Q612,-55 500,-55 Z M479,145 Q590,145 650,201 Q711,257 711,365 Q711,467 652,520 Q594,574 491,574 L350,574 L350,145 Z M419,521 L483,521 Q640,521 640,363 Q640,198 471,198 L419,198 Z" /></symbol><symbol id="MORX-18/3.E" overflow="visible"><path d="M97,0 L97,714 L496,714 L496,635 L187,635 L187,412 L478,412 L478,334 L187,334 L187,79 L496,79 L496,0 Z" /></symbol><use x="0" y="0" xlink:href="#MORX-18/3.A" /><use x="639" y="0" xlink:href="#MORX-18/3.B.alt" /><use x="1639" y="0" xlink:href="#MORX-18/3.D.alt1" /><use x="2639" y="0" xlink:href="#MORX-18/3.E" /></svg></td>

    <td class="expected" ft:id="MORX-18/4" ft:render="ABE"
        ft:font="TestMORXEighteen.ttf"><svg version="1.1" viewBox="0 -200 1821 1200"><symbol id="MORX-18/4.A" overflow="visible"><path d="M459,221 L176,221 L91,0 L0,0 L279,717 L360,717 L638,0 L545,0 Z M352,517 Q345,537 335,568 Q325,599 318,624 Q303,564 287,517 L206,301 L432,301 Z" /></symbol><symbol id="MORX-18/4.B" overflow="visible"><path d="M301,714 Q439,714 505,673 Q572,632 572,537 Q572,474 537,432 Q502,391 436,379 L436,374 Q596,347 596,203 Q596,106 530,53 Q464,0 348,0 L97,0 L97,714 Z M319,410 Q407,410 443,438 Q479,467 479,527 Q479,585 437,611 Q396,637 305,637 L187,637 L187,410 Z M187,76 L331,76 Q421,76 460,111 Q500,146 500,210 Q500,270 459,302 Q418,335 324,335 L187,335 Z" /></symbol><symbol id="MORX-18/4.E" overflow="visible"><path d="M97,0 L97,714 L496,714 L496,635 L187,635 L187,412 L478,412 L478,334 L187,334 L187,79 L496,79 L496,0 Z" /></symbol><use x="0" y="0" xlink:href="#MORX-18/4.A" /><use x="639" y="0" xlink:href="#MORX-18/4.B" /><use x="1265" y="0" xlink:href="#MORX-18/4.E" /></svg></td>
  </tr>
  <tr>
    <th>Observed</th>
    <td class="observed" ft:id="MORX-18/1"/>
    <td class="observed" ft:id="MORX-18/2"/>
    <td class="observed" ft:id="MORX-18/3"/>
    <td class="observed" ft:id="MORX-18/4"/>
  </tr>
  <tr>
    <th class="conformance-header">Conformance</th>
    <td class="conformance" ft:id="MORX-18/1"/>
    <td class="conformance" ft:id="MORX-18/2"/>
    <td class="conformance" ft:id="MORX-18/3"/>
    <td class="conformance" ft:id="MORX-18/4"/>
  </tr>
</table>
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